Internet Assigned Numbers Authority • Domains • Protocols • Numbers • About MPLS Network Actions Created 2026-03-05 Last Updated 2026-03-05 Available Formats [IMG] XML [IMG] HTML [IMG] Plain text Registries Included Below • Network Action Flags Without Ancillary Data • Network Action Opcodes Network Action Flags Without Ancillary Data Reference [RFC-ietf-mpls-mna-hdr-21] Range Registration Procedures 0-14 IETF Review 15-16 Experimental Use 17-19 Private Use 20-439 IETF Review Bit Position Description Reference No registrations at this time. Network Action Opcodes Reference [RFC-ietf-mpls-mna-hdr-21] Available Formats [IMG] CSV Range Registration Procedures 1-110 IETF Review 111-114 Experimental Use 115-126 Private Use 127 IETF Review Opcode Description Reference 0 Reserved [RFC-ietf-mpls-mna-hdr-21] 1 Flag-Based Network Action Indicators without AD [RFC-ietf-mpls-mna-hdr-21] 2 No operation Opcode [RFC-ietf-mpls-mna-hdr-21] 3-110 Unassigned 111-114 Reserved for Experimental Use [RFC-ietf-mpls-mna-hdr-21] 115-126 Reserved for Private Use [RFC-ietf-mpls-mna-hdr-21] 127 Opcode Range Extension Beyond 127 [RFC-ietf-mpls-mna-hdr-21] Licensing Terms